/* Copyright (C) 2020 deesix <deesix@tuta.io>
 * This file is part of M2-Planet.
 *
 * M2-Planet is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * M2-Planet is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with M2-Planet.  If not, see <http://www.gnu.org/licenses/>.
 */

int getchar()
{
	asm("MOV_X0,0x0"
	    "STR_X0,[X18,-8]!"
	    "MOV_X1,X18"
	    "MOV_X2,0x1"
	    "MOV_X8,0x3F"
	    "SVC_0x0"
	    "MOV_X1,0x0"
	    "CMP_X1,X0"
	    "LDR_X0,[X18],8"
	    "B.NE_0x8"
	    "MOV_X0,0xFFFFFFFFFFFFFFFF");
}
